This pump delivers a continuous stream of air on both the up and down strokes. It inflates and deflates by simply changing the hose connection. Ideal for tubes,airbeds,boats,toys and other inflatables. Four universal valve fittings are included. The accordion-style hose stretches to 5 ft.long and interlocks to the pump so that it doesn't fall off while you're pumping. The handle and foot plate are ergonomically designed for your comfort. It's manufactured from lightweight non-corrosive plastic and disassembles easily for inspection or maintenance. Capacity is approximately 68 gallons / 60 strokes.